Journal of Chemical Physics, volume 155, issue 18, pages 184301
Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane
Publication type: Journal Article
Publication date: 2021-11-08
Journal:
Journal of Chemical Physics
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 4.4
ISSN: 00219606, 10897690
Physical and Theoretical Chemistry
General Physics and Astronomy
Abstract
Low-energy (0–15 eV) electron interactions with gas-phase 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) molecules are studied under single collision conditions using dissociative electron attachment spectroscopy. The experimental findings are supported by density functional theory calculations of the virtual orbital energies and energetics of the dissociative decays. Long-lived molecular negative ions F4-TCNQ− are detected in a wide electron energy range (0–3 eV) with electron detachment times in the range of milliseconds. Although plenty of decay channels are observed, their intensities are found to be very small (two to four orders of magnitude relative to the F4-TCNQ− signal). These findings prove that the structure of this strong electron-accepting molecule bearing an excess electron is robust in its electronic ground state, even when highly (up to 6 eV) vibrationally excited. As many as nine metastable fragment anions formed slowly (in the 16–23 µs range) are found in the negative ion mass spectrum of F4-TCNQ, as never observed before in compounds possessing high electron-accepting ability. The present results shed some light on microsecond dynamics of isolated F4-TCNQ molecules under conditions of excess negative charge, which are important for understanding the functionality of nanoscale devices containing this molecule as a structural element.
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1 publication, 33.33%
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1 publication, 33.33%
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American Institute of Physics (AIP)
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American Institute of Physics (AIP)
1 publication, 33.33%
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Pshenichnyuk S. A. et al. Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane // Journal of Chemical Physics. 2021. Vol. 155. No. 18. p. 184301.
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Pshenichnyuk S. A., Modelli A., Asfandiarov N. L., Rakhmeyev R. G., Safronov A. M., Tayupov M. M., Komolov A. Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane // Journal of Chemical Physics. 2021. Vol. 155. No. 18. p. 184301.
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TY - JOUR
DO - 10.1063/5.0072264
UR - https://doi.org/10.1063%2F5.0072264
TI - Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane
T2 - Journal of Chemical Physics
AU - Pshenichnyuk, Stanislav A.
AU - Modelli, A.
AU - Asfandiarov, Nail' L.
AU - Rakhmeyev, Rustam G
AU - Safronov, Aleksey M
AU - Tayupov, Mansaf M.
AU - Komolov, Alexei
PY - 2021
DA - 2021/11/08 00:00:00
PB - American Institute of Physics (AIP)
SP - 184301
IS - 18
VL - 155
SN - 0021-9606
SN - 1089-7690
ER -
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@article{2021_Pshenichnyuk,
author = {Stanislav A. Pshenichnyuk and A. Modelli and Nail' L. Asfandiarov and Rustam G Rakhmeyev and Aleksey M Safronov and Mansaf M. Tayupov and Alexei Komolov},
title = {Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane},
journal = {Journal of Chemical Physics},
year = {2021},
volume = {155},
publisher = {American Institute of Physics (AIP)},
month = {nov},
url = {https://doi.org/10.1063%2F5.0072264},
number = {18},
pages = {184301},
doi = {10.1063/5.0072264}
}
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Pshenichnyuk, Stanislav A., et al. “Microsecond dynamics of molecular negative ions formed by low-energy electron attachment to fluorinated tetracyanoquinodimethane.” Journal of Chemical Physics, vol. 155, no. 18, Nov. 2021, p. 184301. https://doi.org/10.1063%2F5.0072264.